Overload Limit/Warning; Overvoltage Control Function - Omron 3G3JX Quick Start Manual

PROGRAMMING JX
•
PID feedback (FB) upper/lower limit
Data Symbol
07 FBV PID FB status output
Available output terminals 11-CM2, AL2-AL0 (or AL1-AL0)
Requires settings C021, C026, C052, C053
•
PID integral reset
Data Symbol
24 PIDC PID integral reset
Related parameters C001 to C005

3.16 Overload limit/warning

This function helps prevent an overcurrent trip due to rapid load fluctuation in acceleration or constant speed operation.
Parameter
b021 Overload limit selection
b221* 2nd overload limit selection
b022 Overload limit level
b222* 2nd overload limit level
b023 Overload limit parameter
b223* 2nd overload limit parameter
b028 Overload limit source selection
b228* 2nd overload limit source selection
C041 Overload warning level
C241* 2nd overload warning level
Related parameters
* To switch to the 2nd control, allocate 08 (SET) to the multi-function input terminal and then turn it on.
•
The inverter monitors the motor current during acceleration or constant speed operation. If it reaches the overload limit
level, the output frequency is lowered automatically according to the overload limit parameter.
•
For more detailed information please check the user's manual.

3.17 Overvoltage control function

This function helps avoid an overvoltage trip during deceleration. Note that the actual deceleration time may be longer than the
set value. This function automatically keeps DC voltage at the set level during deceleration. The aim of this function is the same
as the overvoltage LAD stop function, described in b130 and b131. However, this functions have different deceleration character-
istics and you can select either function according to your system.
Parameter
b055 Overvoltage protection proportional
gain during deceleration
b056 Overvoltage protection integral time
during deceleration
JX Quick Start Guide
Function name Status
ON
OFF
Function name Status
ON
OFF
Parameter name
00: Disabled
01: Enabled in acceleration/constant speed operation
02: Enabled in constant speed operation
0.1 x Rated current to 1.5 x Rated current
0.1 to 3000.0
00: b022, b222 set values
01: Input terminal O
0.0: Does not operate
0.1 x Rated current to 2.0 x Rated current
C021, C026
Overload limit level
b022
Output current
Max. frequency
A004/A204
Inverter output
frequency
b023
Parameter name
0.2 to 5.0
0.0 to 150.0
Description
Shifts output when exceeding the upper limit or falling
below the lower limit
Description
Forcibly sets the PID integral value to zero
Does not affect the PID function
Data
Deceleration set by the overload
limit parameter
Target frequency
F001
Data
Default setting Unit
01 -
1.5 x Rated A
current
1.0 s
00 -
Rated current A
Default setting Unit
0.2 -
0.2 s
25